Computation of Earnings per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Computation of Earnings per Common Share [Abstract]
Income from continuing operations	$ 8,377	$ 7,974	$ 7,021	$ 12,236
Loss attributable to non-controlling interests	(774)	(1,154)	(2,182)	(1,154)
Income from continuing operations, net of tax	9,151	9,128	9,203	13,390
Income from discontinued operations net of tax	0	7,212	0	12,917
NET INCOME ATTRIBUTABLE TO COMPUWARE CORPORATION	$ 9,151	$ 16,340	$ 9,203	$ 26,307
Basic earnings per share [Abstract]
Continuing operations (in dollars per share)	$ 0.04	$ 0.04	$ 0.04	$ 0.06
Discontinued operations (in dollars per share)	$ 0	$ 0.03	$ 0	$ 0.06
Basic earnings per share (in dollars per share)	$ 0.04	$ 0.07	$ 0.04	$ 0.12
Weighted-average common shares outstanding (in shares)	220,285,000	214,926,000	219,978,000	214,287,000
Diluted earnings per share
Continuing operations (in dollars per share)	$ 0.04	$ 0.04	$ 0.04	$ 0.06
Discontinued operations (in dollars per share)	$ 0	$ 0.03	$ 0	$ 0.06
Diluted earnings per share (in dollars per share)	$ 0.04	$ 0.07	$ 0.04	$ 0.12
Weighted-average common shares outstanding (in shares)	220,285,000	214,926,000	219,978,000	214,287,000
Dilutive effect of stock awards (in shares)	3,385,000	5,503,000	3,511,000	5,720,000
Total shares (in shares)	223,670,000	220,429,000	223,489,000	220,007,000
Anti-dilutive shares related to stock awards excluded from EPS calculation (in shares)	6,100,000	3,300,000	5,200,000	2,600,000
Performance shares not included in EPS (in shares)	2,500,000	5,100,000	2,500,000	5,200,000